Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
thue xanh » thue thanh, thuc hanh, thuy anh
hanh nang » anh nang, ganh nang, hanh mang
cao chung » cho chuong, chon chung, cao cong
cac chung » cac phuong, cac cong
cho thue » choi thuc, cuc thue, cho he
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: cho thue xanh - hanh nang ((cao chung) OR (cac chung)) ((cong thanh) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho thue xanh - hanh nang ((cao chung) OR (cac chung)) ((cong thanh) OR (cong tan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho thue xanh - hanh nang ((cao chung) OR (cac chung)) ((cong thanh) or (cong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: cho thue xanh - hanh nang ((cao chung) OR (cac chung)) ((cong thanh) or (cong tan)) toan cao*.